Lfos Menu - Novation KS Rack User Manual

The LFOs Menu
The LFO Menu
To complement the front panel controls in the LFO section, there are
many other functions located within the LFOs Menu. This is selected by
pressing the keypad '4' button while the MENUS buttons is active.
Use the PERF / PROG / PAGE up/down buttons to scroll through the
Menu functions available - See table below.
LFO Menu
Page Function
1 LFO1 Velocity
2
LFO1 Triggering
3
LFO1 Keysync
4 LFO1 Keysync Phase OffsetLFO1 Init Phase
5 LFO1 Polarity
6 LFO1 Common to all VoicesLFO1 Common
7
LFO2 Velocity
8 LFO2 Triggering
9 LFO2 Keysync
10 LFO2 Keysync Phase OffsetLFO2 Init Phase
11
LFO2 Polarity
12 LFO2 Common to all VoicesLFO2 Common
LFO Velocity (Menu Pages 1 & 7)
The intensity of the LFO may be set to respond to velocity. As an exam-
ple of this. Set the LFO1 depth control to a postive value from the front
panel such that pitch modulation occurs on Oscillator 1. Using this Menu,
setting the LFO1 velocity to a positive valu. Notice that, when pressing a
key on the keyboard, a soft press reuslts in a very small amount of pitch
modulation or wobble and a hard press results in a large amount.
When an LFO is used in the mixer section as a modulation source, this
feature is useful for controlling the volume of each Oscillator in proportion
to how hard a key is struck.
LFO Delay Triggering (Menu Pages 2 & 8)
When the Voice mode is set to any of the Mono options (see Page 23),
different LFO delay settings are available for legato playing styles (notes
overlapping).
When the first note of a musical phrase is played, it might be desirable to
have an initial delay on the LFO. (If the LFO is routed to pitch modulation,
a vibrato effect would be introduced after the delay time). For the remain-
ing legato notes, a non interrupted vibrato might be required. Setting this
to SGL (single) achieves this.
Setting this to MLT (Multi) sets the LFO delay to apply to every note
played.
LFO Keysync (Menu Pages 3 & 9)
Each LFO waveform may be restarted every time a key is pressed.
For example, if a siren type sound effect was required, an LFO using a
sawtooth wave would be set to positively modulate pitch. Each time a new
key is pressed, the pitch would climb from the same point (because the
LFO waveform would be restarted) rather than being at an undetermined
pitch position.
Note : If the LFO Common To All Voices function (detailed below) is set
to ON for the LFO, altering this value will have no effect. How a keysync
is applied to the LFO is determined by the changing the Global Sync
Mode settings (found in the Global Menu). See Page 35 in the Advanced
Features chapter for details.
LFO Keysync Initial Phase Offset (Menu Pages 4 & 10)
This setting provides an alternative point in the LFO's waveform cycle
where the waveform will be restarted from when LFO Keysync is set to
ON. To hear the difference, set a slow LFO to modulate Oscillator pitch
modulation and experiment with different LFO waveforms and LFO
Keysync Phase Offset settings.
Display Value
LFO1 Velocity -64...63
LFO1 MonoDelTrig SGL-MLT
LFO1 Keysync OFF-ON
OFF-ON
LFO1 Unipolar OFF-ON
OFF-ON
LFO2 Velocity -64...63
LFO2 MonoDelTrig SGL-MLT
LFO2 Keysync OFF-ON
OFF-ON
LFO2 Unipolar OFF-ON
OFF-ON
ADVANCED FEATURES
LFO Polarity (Menu Pages 5 & 11)
This setting setermines whether the LFO modulates in a positive and neg-
ative direction or soley in a positive direction.
Pitch
Time
Unipolar set to OFF
As an example of how this works, imagine an LFO assigned to modulate
an Oscillator's pitch while a key of middle C is played on the keyboard.
When Unipolar is set to OFF, the pitch would be modulated between a
note some interval below middle C and another note at an equal interval
above middle C. The interval between the notes is determined by the
modulation amount applied to the pitch by the LFO.
If the LFO was modulating the pitch with Unipolar set to ON, the pitch
would only be modulated in a positive direction, so the pitch would modu-
late between middle C and another note located at some interval above.
It is often useful to set an LFO's Unipolar setting to ON if an LFO is being
used as a simple Envelope Generator (by setting its ONE SHOT mode) .
Pitch
Time
LFO Common to all voices (Menu Pages 6 & 12)
Each of the 16 voices (notes of polyphony) have two LFO's - 32 in total.
The sixteen LFOs designated LFO 1 (one per voice) may be 'phase'
locked together and similarly the sixteen LFO's designated LFO 2 may be
locked.
To illustrate this, assume the LFO waveform is a triangle wave and at a
specific moment in time all sixteen are at the beginning of a the rising por-
tion of the wave. At a later point in time all will be at the beginning of the
falling portion of the wave. If this waveform is applied to pitch, when a
number of notes are played simultaneously, the pitch of all the notes will
rise and fall at precisely the same time.
If the LFO is not locked, then each wave will be at a random position rela-
tive to the others. In this pitch modulation example, the pitch of all the
notes will be changing 'out of synchronization' with others.
Imagine a String section of eight violin players. With the LFO locked and
the LFO being used to create a vibrato, all sixteen of the string players
would have the bow in exactly the same position. This obviously does not
occur in a real string section and if it did the sound would be very unusu-
al. In reality, each player's bow would be in a different position which
gives the strings a 'chorus' type sound. To simulate the string section the
LFOs would not be locked.
Setting this to ON will 'lock' the LFO.
When LFO Common To All Voices is set to ON, changing the setting of
the LFO Keysync function will have no effect. Instead, how a keysync is
applied to the LFO is determined by the setting of the Global Sync Mode
value (found in the Global Menu). See Page 51 in the Advanced
Features chapter for details.
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38
Middle C
Middle C
Unipolar set to ON